Gas heating-stove.



PATENTED SEPT. 17, 1907.

0. H. TOPP. GAS HBATIN G STOVE APPLICATION rmm APR. 2

: sums-sum 1.

WITNESSES.-

A TTORNE Y5 nu: NORRI5 FlTERb can, wAsmunmn, n. c.

No. 866,237. PATENTED SEPT. 17, 1907.

0. H. TOPP.

GAS HEATING STOVE. K APPLIUATIOR I'ILED APR.2,1906.

2 SHEETS-SHEET 2.

A ll.

ma iTopp,

' c. 1'": mnuus rsn-Rs co. WASIHINCTOA, n

A ffolezwixs UNITED STATES PATENT OFFICE.

GAS HEATING-STOVE.

Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed April 2, 1906. Serial No. 309,398.

vented a new and useful Gas Heating-Stove, of which the following is a specification.

This invention relates to gas heating stoves, and it has for its objects to simplify and improve the construction and operation of this class of stoves; to provide improved means whereby the air and gas supply may be adjusted and regulated without turning off the gas; to provide an improved construction whereby the fire back may be readily detached for the purpose of relining with asbestos, when necessary; and to so improve the general construction that the parts may be readily disconnected and assembled, as may be required.

With these and other ends in view, which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts, which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple andpreferred form of the invention; it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the invention may be made, when desired.

In the drawings, Figure 1 is a perspective view of a gas stove constructed in accordance with the principles of the'invention, the same being shown in vertical section. Fig. 2 is a front view, on a reduced scale, of the improved gas stove. Fig. 3 is a sectional detail view showing the air regulating slide and related parts. Fig. 4 is a sectional detail view taken through the manifold and showing one of the gas nipples and regulating valves. Fig. 5 is an end view showing the nipple, detached.

Corresponding parts in the several figures are indicated throughout by similar characters of reference.

The improved stove is constructed in imitation of an open fireplace. The casing 0 includes a bottom plate 1, a back plate 2, side plates 3, 3, a top plate 4 having a depending front flange or deflector 5, and an upstanding flange 6 at the front edge of the bottom plate. A back wall 7 is connected with and rises from the bottom plate 1; and between the back wall 7 and the back plate 2 area plurality of air heating tubes 8, 8 extending between apertures 9, 10 in the bottom and top plates 1, 4, respectively. The casing is supported upon legs 11.

At the front of the casing there is constructed an air box or air chamber A which is bounded, in part, by the bottom plate 1 and the front flange 6 of the casing.

The rear wall of the air chamber is formed by a plate 12 carrying a lurality of Bunsen tubes 13 which are substantially L-shaped, said tubes extending first reard y and then upwardly, and said tubes being connected with each other by webs 14; the back wall 12 having the tubes and the webs connecting said tubes may be advantageously formed as a single casting.

15 is the top plate of the air chamber, which is adapted to be detachably connected with the back wall 12; said top plate and back wall being provided with coinciding lugs, as 16, adapted to be connected, as by means of a bolt 17. The lower edge of the back wall 12 is supported against an angle iron 18 secured upon the bottom plate of the stove casing; and the top plate 15 is provided with a flange 19 for the passage of bolts 20 whereby it is securely connected with the front flange 6 of the stove casing.

That portion of the bottom plate 1 of the stove casing which constitutes the bottom of the air chamber is provided with apertures 21, the area of which may be regulated by means of a slide 22 having corresponding apertures 23; said slide is provided at one end with a nut 24 for the passage of a screw 25 which is swiveled in a bracket 26 at one end of the stove casing, where it is conveniently accessible and capable of being turned manually, or by means of a screw-driver, for the purpose of regulating the admission of air to the air cham ber.

Supported within the air chamber is a manifold M which has been shown as consisting of a tube of elliptical cross section, provided with a plurality of nipples 27 which are disposed in alinement with the Bunsen tubes 13, said nipples being connected with the rear wall of the manifold. The front wall of the latter is provided with threaded apertures for the reception of needle valves 28 whereby the passage of gas through the nipples 27 may be regulated; said valves being accessible through apertures 29 in the front flange 6 of" the stove casing, and said valves being provided with notches 30 for engagement with the bit of a screwdriver whereby they may be conveniently and independently adjusted to regulate the flow of gas. The manifold is supported detachably within the casing by means of stud bolts or machine screws 31 engaging the ends thereof through the side plates 3 of the stove casing; and the said manifold is connected with the source of gas supply through a pipe 32 extending through the bottom of the casing and through a slot 33 in the air regulating slide 22; said slot being of such dimensions as to admit of any desired adjustment of said slide. The latter is supported by cleats 34 upon the under side of the stove casing.

At the upper edge of the back wall 7 there is formed a flange 35 for the purpose of supporting the fire back, which consists of a plate 36 having a facing 37 of asbestos or similar refractory material, and provided at 'the back wall 7.

its upper edge with an L-shaped or hook-shaped flange 38 adapted to be hooked over the flanged upper edge of The plate 36 of the fire back is provided at its lower edge with a forwardly extending flange 39 engaging under the burner plate 40, which latter is apertured for the reception of the upper ends of the Bunsen tubes 13; said burner plate being supported upon the webs 14 connecting said tubes, and provided at its ends with lugs 41 for the passage of screws or bolts 42 whereby it is detachably connected with the side plates of the casing. A shield or finishing plate 43 extends from the upper edge of the front flange 6 in the direction of the burner plate 40 and beneath the front edge of the latter.

The back plate 2 of the stove has an aperture 44 surrounded by a collar 45 adapted to be connected with a pipe for conveying the products of combustion to the chimney.

From the foregoing description, taken in connection with the drawings hereto annexed, the operation and advantages of this invention will be readily understood. By means of the slide 22 and the needle valves 28, the supply of air and gas may be regulated; the gas being discharged through the nipples 27 in the direction of the Bunsen tubes, but within the air chamber where it receives the proper admixture of oxygen. The supply of gas to the manifold is controlled by a valve 48 upon the supply pipe. The inflammable mixture of gas and air upon issuing through the tubes 13 is ignited and produces a flame of intense heat, whereby the asbestos covered fire back is quickly heated to incandescence; the heat being radiated into the room where the stove is located through the open front of the stove casin The products of combustion pass over the upper edge of the fire back around the tubes or flues 8 to the exit 44; said flues being heated so that the circulation of air will be established therethrough, cold air entering at the lower ends of said tubes, and said air being heated during its passage through the tubes or flues and discharged in a heated condition through the upper ends of the latter.

This improved stove is simple in construction, and its component parts are capable of being easily separated and assembled, so that ready access may be had to any of the parts. The fire back may be very conveniently lifted from its position by simply detaching the burner plate. The supply of air and gas is capable of perfect regulation, so that the best results may be attained When the stove is in practical use.

Having thus described the invention, what is claimed is:

1. A stove casing having a bottom plate, side plates and a front flange, an angle iron secured upon the bottom plate, and an air chamber bounded in part by the bottom plate, the side plates, and the front flange of the stove casing and including a back wall having a plurality of burner discharge tubes, and a top plate; said back wall and top plate being connected together; said back wall resting against the angle bar upon the bottom plate of the stove casing and said top wall being provided with a flange deiachably connected with the front flange of the stove casing.

2. A stove casing having a bottom plate, side plates and an upturned front flange, a back wall and a top plate cooperating therewith to form an air chamber, a set of burners mounted in said chamber and adapted to receive air therefrom, an apertured slide adjustably engaging the bottom of the casing and regulating the admission of air to the air chamber through apertures in the bottom plate, and means operable from the exterior of the casing for regulating the supply of gas to the burner.

3. A stove casing having a bottom plate, side plates, :1 back plate, a top plate provided with a depending flange forming a deflector, and an upstanding flange at the front edge of the bottom plate, an air chamber bounded in part by the bottom plate, the side plates and the front flange of the stove casing and including a top plate and a back wall, the latter provided with Bunsen tubes; at back wall rising from the bottom plate of the stove casing in rear of the Bunsen tubes; a burner plate having apertures engaging said tubes; a fire back having at its lower edge a forward extending; flange engaging the burner plate and provided at its upper edge with a hoolcshaped flange engaging the upper edge of the back wall; and means for securing the burner plate in position.

4. A stove casing having a back plate provided with an exit opening, air heating flues extending between the bottom and top plates of the stove casing, and a back wall rising from the bottom plate of the casing in front of the air heating flues and having a supporting flange at its upper edge; in combination with a burner plate supported in front of the back wall, and a fire back having a hookshaped flange at its upper edge engaging the upper edge of the back wall and provided at its lower edge with a flange engaging the burner plate.

5. In a gas heating stove, a casing having a back plate provided with an exit for products of combustion, air heating flues extending between the bottom and top plates of the casing, a back wall rising from the bottom plate in front of the air tubes, an asbestos covered plate constituting a fire back and provided at its upper edge with a hook-shaped flange supported upon the upper edge of the back wall and having a forward extending flange at its lower edge, an air and gas mixing chamber having a back wall provided with a plurality of Bunsen tubes, Webs connecting'said tubes, and an apertured burner plate engaging the tubes, supported upon the webs, and engaging the forward extending flange at the lower edge of the fire back.

0. The combination with a stove casing, a vertical back wall therein extending to a point near the top of the casing and having a forwardly directed flange at the upper edge, a horizontally extending removable burner plate fitted into the casing in front of the backwall and having its rear edge arranged in proximity to the forward surface of the back wall, of a fire-back adapted to fit in the casing having a rearwardly directed hook-shaped flange at its upper edge adapted to fit down over the upper edge of the back wall and cooperate with the forwardly directed flange thereon to support the fire-back in operative position, and having a forwardly directed flange at its lower edge adapted to enter between the rear edge of the burner plate and the back wall and engaging beneath the burner plate to prevent disengagement of the hook-shaped flange of the fireback relatively to the back wall.

In testimony that I claim the foregoing as my own, I

have hereto affixed my signature in the presence of two witnesses.

CHARLES H. TOPI'.

Witnesses Gnonon H. IIILTBRUNER,

JOHN F. GARRISON. 

